Lmao
The only possible way you can answer Cuba is if you think China is not a communist country (but you still think Cuba is one).
From what I've seen from some hardline tankies in the internet, the general consensus seems to be that Vietnam and China are no longer communist but rather transitioned into "state capitalism".
more of a trotskyite take, no? (although they use the phrase "degenerated/deformed workers state") Tankies tend to just shill for the regimes regardless.
The evidence from whatever dregs of r/DankLeft manage to fall upwards onto Reddit's Home page supports this hypothesis.